Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6905380 | Counter rotating air propeller drive system | — | 2005-06-14 |
| 6893302 | Selectable air propeller drive system | Dean Clausen | 2005-05-17 |
| 5131197 | Mounted stairway | — | 1992-07-21 |
| 4959578 | Dual rotor axial air gap induction motor | — | 1990-09-25 |